Factory-direct shipping on all bulk orders
GMP-compliant · Factory direct

Your Research Peptide Partner

Custom and bulk peptides produced to strict ≥99% research-grade purity — every batch HPLC-verified and shipped with a full Certificate of Analysis.

≥99% PurityHPLC verified
COA IncludedEvery batch
Worldwide35+ countries
LabPro laboratory team
Welcome to Tianji

We make peptide sourcing reliable, traceable & affordable.

Precision is the whole point in peptide research. Every product is analysed by HPLC and mass spectrometry before it leaves the facility — and we stand behind the result with a substantial compensation guarantee. Factory-direct, with no stores, wholesalers or agents in between.

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Our range

Popular categories

From standard research compounds to fully custom synthesis — across the full spectrum of applications.

Diverse peptide range

Featured peptides

Research-grade peptides at ≥99% purity, lyophilized and shipped with a full Certificate of Analysis. Larger volumes shorten lead times and improve pricing.

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Certificate of Analysis
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Certificate of Analysis
Certificate of Analysis
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Research-grade purity
Customer stories

Trusted by labs & distributors across 35+ countries

The COAs matched our independent HPLC checks every single time. After years of supply issues elsewhere, the consistency finally let us plan experiments without buffer weeks.
RO
Dr. R. Okafor
Research Lab · Procurement
Standard orders shipped from the overseas warehouse the next business day — no surprise expedited fees. Delivery landed exactly as promised, every time we ordered.
JM
J. Müller
Biotech R&D · Germany
Factory-direct pricing and private-label packaging support changed our margins entirely. Exactly what we needed as a regional distributor with a demanding client base.
LC
L. Chen
Regional Distributor · Asia Pacific
We had an urgent order and needed a fast turnaround. The team responded within the hour, confirmed stock, and the shipment was on its way the very next day.
SV
S. Varma
University Lab · India
Customs paperwork and the COA were flawless, so the shipment cleared without a single query. That alone saved us a week on a tight study timeline.
AR
Dr. A. Rossi
Contract Research Org · Italy
The cosmetic-grade peptides held to spec through our full stability testing — consistent batch to batch, which is rare at this price point.
MA
M. Andersson
Cosmetic Formulator · Sweden
Reorders are effortless: same purity, same packaging, same lead time every quarter. Their team even flags low stock before we have to ask.
PN
P. Nakamura
Lab Supply Manager · Japan
Private-label support let us launch our own line in weeks, not months. Pricing held firm even as our order volumes grew.
CO
C. Oliveira
Distributor · Brazil
Their analytical team answered every spec question in detail before we committed. Knowledgeable, fast, and the product matched the data sheet exactly.
HT
H. Tan
Lab Manager · Singapore
Questions

Most popular questions

Still need detail? Send an inquiry and the team will follow up directly.

What types of peptides do you manufacture?
Custom peptides, research-grade peptides and cosmetic peptides, plus lyophilized powders and raw materials for laboratory and cosmetic applications.
What purity can I expect?
Typically ≥99%, with a detailed Certificate of Analysis supplied for each batch so you can verify it independently.
Where do you ship from?
From multiple warehouses — we dispatch from the location closest to you for faster, more efficient delivery.
What payment methods do you accept?
Wise, bank transfer (T/T), Western Union, and credit / debit card — settled in US Dollars.
Do you ship internationally?
Yes — to 35+ countries and regions, with full order tracking throughout delivery.
How long does processing & shipping take?
Standard: US warehouse next business day (3–5 days est.); Hong Kong 3 days (7–20 days est.). Custom: 2–4 weeks by complexity. Shipped via DHL, FedEx or EMS.
Get in touch

Skip the middlemen — peptides at factory cost

Send your requirements and the team replies within 24 hours with pricing, COA and lead time. Support is online around the clock — before, during and after delivery.

Request a free quote

Our team replies within 24 hours — pricing, COA & lead time.

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T/T, Wise, card